This 15-year-old earns $480,000 from babysitting

NOA Mintz is just 15 years old. But, unless you're among the top earners in the country, she almost definitely makes more money than you do.

Because when she's not hitting the books at school, she's running Nannies By Noa - a babysitting agency that boasts 190 clients and has become so popular, she's been forced to hire herself a CEO to keep up with demand.

Mintz charges a flat rate of $5 for babysitters and now has 50 recruits working on average 15 hours a week.

She has 25 full-time nannies, of which she takes a 15 per cent annual fee from their initial gross salaries.